Opened 10 years ago
Closed 9 years ago
#4430 closed defect (needs_more_info)
ffmpeg creates duplicate frames at begin of avi file
Reported by: | martinr92 | Owned by: | |
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Priority: | normal | Component: | undetermined |
Version: | unspecified | Keywords: | |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
When I encode a video (source .avi, destination .avi), the destination files first 3 frames are equal.
I used following command to create the "out.avi":
ffmpeg -ss 00:00:02.360 -i "input.avi" -c:v libx264 -t 00:00:05.760 "out.avi"
Create thumbnails for the first 4 frames. You can see, that img1, img2 and img3 are equal:
ffmpeg -ss 00:00:00.000 -i out.avi -vcodec mjpeg -vframes 1 img1.jpg ffmpeg -ss 00:00:00.040 -i out.avi -vcodec mjpeg -vframes 1 img2.jpg ffmpeg -ss 00:00:00.080 -i out.avi -vcodec mjpeg -vframes 1 img3.jpg ffmpeg -ss 00:00:00.120 -i out.avi -vcodec mjpeg -vframes 1 img4.jpg
If I encode the same video to a mp4, it's working correctly.
ffmpeg -ss 00:00:02.360 -i "input.avi" -c:v libx264 -t 00:00:05.760 "out.mp4"
The equal frames are a problem for me, because I create a lot of .avi files and merge them at the end. And caused by that duplicate frames, you can see a short "freeze" in the main video.
Change History (3)
comment:1 by , 9 years ago
comment:3 by , 9 years ago
Component: | ffmpeg → undetermined |
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Resolution: | → needs_more_info |
Status: | new → closed |
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